baber/WOPTO huggingface dataset:
Patent GB-190707-A (GB)
Title: An improved centrifugal apparatus for separating solids from liquids
IPC: B04B1/00
Filed: 1922-12-06
Abstract: 190,707. Soc. GÚnÚrale d'Evaporation ProcÚdÚs Prache et Bouillon. Dec. 20, 1921, [Convention date]. Density separators.-Liquids are clarified in a centrifugal separator having end discs 2 keyed to the spindle 3 and connected together by two conical frustra 4 having axes coinciding with those of the discs. The space between the frustra 4 contains equally spaced blocks 6 thus making a number of pyramidal spaces 7. Tubes 9 connected to the vertices of these spaces are turned inwards towards the spindle as shown and terminate in conical reducing nozzles 11 to discharge into a collecting ring 25 with a discharge tube 26. A second outlet is provided near the axis by apertures 20 in the end disc leading to the collector 22 and discharge tube 23. The liquid is supplied through the tube 15 and passes through the distributor 14 and nozzles 16 into the casing 17. It is then led into the perforated tubes 19 and the thick liquid with the solids passes to the periphery the liquid passing through the tubes 9 to the discharge tube 26. The clarified liquid passes from the tubes 19 towards the axis, through the perforated tube 24 to the apertures 20 and discharge tube 23.
Patent GB-512460-A (GB)
Title: Benzenesulphonalkanolamide derivatives and process of producing them
IPC: C07C311/37
Filed: 1937-12-02
Abstract: 512,460. Sulphonamide compounds. LILLY & CO., E. Dec. 2, 1937, No. 33373. Convention date, Jan. 23. [Class 2 (iii)] p-Aminb- or p-acetylamino-benzene-sulphonalkanolamides are prepared by treating p-acetylaminobenzene-sulphonyl chloride with an alkanolamine which contains three or. four carbon atoms and one or two hydroxyl groups and also contains a secondary carbon atom to which either a hydroxyl group or the amino group is attached, followed if necessary by boiling with a non-oxidizing mineral acid. The alkanolamines specified are isopropanolamine ; alpha- and #-aminoglycerols; 1-, 3- and 4- aminobutan-2-ols; and 2- and 3-aminobutan-1-ols. The products, which may be used in the form of their salts, possess therapeutic properties. Examples are given of the interaction of p- . acetylaminobenzene-sulphonyl chloride with isopropylamine, sec-butanolamine and an aminoglycerol in the presence of sodium carbonate and the treatment of the products with boiling hydrochloric acid. Salts of the products mentioned are the hydrochlorides, sulphates, lactates, tartrates, maleates, fumarates and succinates.
Patent GB-407287-A (GB)
Title: Improvements relating to dressing tables and like articles of furniture
IPC: A47B67/00
Filed: 1933-11-30
Abstract: 407,287. Tables and cabinets. DUNN, J. W. T., Smallfield Place, Smallfield, near Horley, Surrey. Nov. 30, 1933, No. 33569. [Classes 52 (i) and 52 (iii).] A dressing-table or like article of furniture comprises a body a with a lid or cover i hinged to a member l adapted to slide across the body, the edges being fitted ir grooves m. The underside of the top is fitted with a mirror k. The body a may be compartmented and the top i made in a corre sponding number of sections, only the central section being fitted as above.
Patent GB-486923-A (GB)
Title: Improvements in and relating to the treatment of copals, amber and similar resins
IPC: C09F1/00
Filed: 1936-12-07
Abstract: Oil-soluble resin compositions are made by dissolving fossil resins such as copal and amber in a hot organic acid at a temperature below that at which the resin is decomposed and then esterifying the mixture with a multivalent alcohol such as glycerine; polyglycerine or triethanolamine.  The organic acids are those which on esterification with multivalent alcohols give lacquer-forming products and include linseed oil fatty acids, resin acids, naphthenic acid and fatty acids derived from Talloel. The resin may be warmed to 250-300 DEG  C. before incorporation in the hot organic acid.  The resin compositions may be blown with air to compatibility with nitro-cellulose, heated with stand oil, or mixed with other resins. Examples describe (1) dissolving Congo copal slowly with stirring in Talloel fatty acid at 200-250 DEG  C. and then esterifying with glycerine at 250-280 DEG  C. until an acid number of 20 is attained; (3) dissolving finely pulverized copal or amber, kneaded with part of the organic acid, in the remainder of the organic acid at 250 DEG  C. and subsequently esterifying with glycerine.  Specification 191,422, [Class 95], is referred to.  The Specification as open to inspection under Sect. 91 describes also hardening with metals or metallic oxides as an alternative to esterification.  This subject-matter does not appear in the Specification as accepted.ALSO:Oil-soluble resin compositions are made by dissolving fossil resins such as copal and amber in a hot organic acid at a temperature below that at which the resin is decomposed and then esterifying the mixture with a multivalent alcohol such as glycerine, polyglycerine or triethanolamine.  The organic acids are those which on esterification with multivalent alcohols give lacquer-forming products and include linseed oil fatty acids, resin acids, naphthenic acid and fatty acids derived from Talloel. The resin may be warmed to 250-300 DEG  C. before incorporation in the hot organic acid.  The resin compositions may be blown with air to compatibility with nitro-cellulose, heated with stand oil or mixed with other resins.  Examples describe (1) dissolving Congo copal slowly with stirring in Talloel fatty acid at 200-250 DEG  C. and then esterifying with glycerine at 250-280 DEG C. until an acid number of 20 is attained; (3) dissolving finely pulverized copal or amber kneaded with part of the organic acid in the remainder of the organic acid at 250 DEG  C. and subsequently esterifying with glycerine.  Specification 191,422 [Class 95], is referred to.  The Specification as open to inspection under Sect. 91 describes also hardening with metals or metallic oxides as an alternative to esterification.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1055315-A (GB)
Title: Improvements in or relating to bistable devices
Inventor: TRUSLOVE DAVID JAMES
IPC: F15C3/00
Filed: 1963-08-24
Abstract: 1,055,315. Regulating fluid flow. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 21, 1964 [Aug. 21, 1963], No.33622/63. Heading G3H. [Also in Divisions G1 and G4] A bistable device comprises first and second bounded regions separated by a third region containing porous material, a non-wetting globule of liquid, and means for moving the globule between the first and second regions through the third region. A liquid globule is contained within a cylindrical cavity 11 having two zones 12, 13 filled with a first porous material and separated by an intermediate zone 14 filled with a second porous material. Tubes 15, 16 and 19 communicate with the cavity 11 as shown and are closed by porous plugs. The mean cell diameter of these plugs is less than that of the intermediate material which in turn is less than that of the material in the zones 12 and 13. A fluid pressure pulse applied along the tube 15 will force the liquid into the zone 13. For speed of operation the pressure pulse is maintained until the globule has been completely transferred from one zone into the other, but once movement has been started surface tension of the liquid will assist the movement. The position of the liquid globule can be detected by applying pulse to the tubes 15 or 16 and detecting it in the tube 19. This pulse is of considerably less amplitude than the driving pulse. Alternatively the sensing pulse may be applied through the tube 19. A matrix of non-intersecting X and Y pressure ducts may be formed with similar memory devices at the crossing points. In a second embodiment for use as an electro-kinetic transducer the tube 19 and the porous material in the zones 12, 13 may be omitted and metal grids placed at the edges of the intermediate zone. If the liquid is a polar liquid a potential difference will be generated between the grids as the liquid is forced through, the size of the potential difference depending on the speed of movement of the liquid. It is also stated that the intermediate zone may be formed by treating the surfaces of contacting regions of a porous material to give a lower pore size at the contacting surface.
Patent GB-470156-A (GB)
Title: Improved sulphur dyestuff preparations
Filed: 1936-12-08
Abstract: Solid sulphur dyestuff preparations are formed by mixing a sulphur dyestuff with a stable hydrosulphite and a substance of alkaline reaction, with or without further additional substances such as sugar.  In examples: (1) calcined sodium carbonate and hydrosulphite FD conc. are mixed with Eclipse yellow RP, Eclipse olive and Eclipse brilliant green 3GT; (2) Eclipse pure blue 3GLP is mixed with sodium carbonate, trisodium phosphate and hydrosulphite FD conc.; (3) Eclipse dark green BP is mixed with sodium glycollate and hydrosulphite FD conc.; (4) Eclipse green GP is mixed with sodium phenate and hydrosulphite FD conc.; glucose may also be added; (5) Eclipse brown B is added to lactose, sodium carbonate and hydrosulphite FD.  The use of borax and compounds yielding ammonia is mentioned.
Patent GB-1322064-A (GB)
Title: Worm gear for driving machine-tool slides
IPC: B23Q5/56
Filed: 1970-07-10
Abstract: 1322064 Milling machine details WERKZEUGMASCHINENFABRIK ADOLF WALDRICH COBURG 10 July 1970 [11 July 1969] 33714/70 Heading B3K [Also in Division F2] A drive for a table 1 of a milling machine comprises two coaxially arranged worms 5, 6 meshing a rack 4 fixed to the table 1, and the worms 5, 6 are driven from an axially movable compensating shaft 13 by pairs of helical gears 9, 11 and 10, 12, each pair having teeth of equal but oppositely directed lead angle. The compensating shaft 13 is driven from a driving shaft 16 through straight-toothed gears 15, 14. Alternatively, shaft 16 may be arranged coaxially with shaft 13 and coupled thereto by a clutch or coupling which allows relative axial movement between them. Axial movement of compensating shaft 13 causes different torques to be transmitted by the worms 5, 6, and this may be effected by means of a double-acting hydraulic piston and cylinder unit 17. Axial locking of compensating shaft 13 may be effected by an expansion cylinder 18 which surrounds a piston-rod 25 of the cylinder unit 17. If pressure is admitted at a connection 24, the expansion cylinder 18 is lifted away from the piston-rod 25 thereby releasing it for displacement.
Patent GB-1514242-A (GB)
Title: A-c signal processing circuits for compandors
IPC: H04B1/64
Filed: 1975-08-13
Abstract: 1514242 Compandor systems NORTHERN TELECOM Ltd 13 Aug 1975 [27 Aug 1974] 33749/75 Heading H4R Compressor or expander, for use in a compandor, has a number of variable gain circuits connected in series, isolated by buffer amplifiers, each variable gain circuit including a filter network to limit the variable gain characteristic of the circuit to a mutually exclusive operational band of frequencies and providing a substantially constant gain at other frequencies, with a separate control unit associated with each variable gain circuit to control the gain thereof, each control unit being responsive to signals of a frequency in the range corresponding to the operational band of the associated variable gain circuit. As described a compressor, Fig. 8, has a signal input at 2 applied via a transformer 60 in balanced form to the inputs of amplifiers 80 and 81 which feed via respective transistors 82 and 83, buffer amplifiers 88, and 89. The inputs of the buffer amplifiers 88 and 89 are bridged by a high pass filter network 21 c in parallel with an assembly of series diodes 12. The amplifiers 88 and 89 feed a second circuit identical to that described above except that the high pass filter network 21c is replaced by a low pass filter network 26c. The second circuit feeds the output port 3 via a transformer 62 from a tertiary winding of which is derived a control voltage to control the impedance of the two assemblies of diodes 12. The control voltage for the diodes 12 in the first circuit, or low band compressor, is fed via a low pass filter 41, a full wave rectifier 31, a time constant control circuit 32, 33, a voltage clamp 71, which limits the minimum impedance of the diodes 12, and a current source 35, 36, the output current from which flows, via the transistors 82, 83. through the diodes 12 to vary their impedance, and therefore the gain of the circuit at low frequencies. In a similar manner the control signal fed via the high pass filter 46 controls the gain of the high band compressor at high frequencies. In both circuits current sources 86, 87 and 90 are provided to supply sufficient current for amplifiers 80, 81, 82, 83, to handle large out of compression band signals without limiting while allowing only the control current to flow through diodes 12. The corresponding expander, Fig. 9, uses a similar circuit except that the filters 21c and 26c are connected in a negative feedback circuit for the amplifiers 100, 101, 102, 103, to provide an inverse form of control to that provided in the compressor. In the expander circuit transistors 96 and 97 act as current drains to draw current through the transistors 102 and 103 to prevent limiting at high out-of-band signal levels. A modified high pass filter to replace the filter 21c in Figs. 8 and 9, and which has a slightly increasing impedance at high frequencies, providing a better signal to noise ratio for the compandor system, is described with respect to Fig. 10 (not shown).
Patent GB-918939-A (GB)
Title: Photographic camera with an automatic exposure regulating device
IPC: G03B7/12
Filed: 1961-09-21
Abstract: 918,939. Photographic cameras. AGFA A.G. Sept. 21, 1961 [Sept. 23, 1960], No. 33866/61. Class 98 (1). [Also in Group XL (b)] A photographic camera comprises a photo-electrically actuated galvanometer sensed by an exploratory member having an abutment which arrests an exposure factor setting member, the exploratory and setting members being spring-urged toward one another. As the camera release 37 is depressed, first a pin 39 moves to allow the spring 31 to rotate the lever 26. Lever 26 actuates, through pin-andslot 23, 24, an exploratory device comprising a needle-holding device yieldably coupled to an exploratory jaw 14 which is arrested by the clamped needle 7. A lug 89 then slips past a shoulder 38 of the release rod 36 allowing a pawl to engage a toothed segment 32 to clamp lever 26. In modifications, Figs. 3 and 4 (not shown) the pawl and toothed segment are replaced by friction surfaces or a ball or roller, respectively. Finally lugs 84, 85 engage to release the diaphragm setting ring 50 which runs down under the action of a spring 51 until an arm 42 of a lever 43 meets an abutment 27 on a lever 31. Shutter speed is taken into account by a cam and follower 70, 71 which operate a cord 74 through a lever 65 to rotate the galvanometer 3. Film speed-setting knob 83 also rotates the galvanometer by shifting a pulley 76 around which passes a cord 74. For manual operation a ring 55 is moved until index 61 is against the desired aperture member. A cam 59 then short-circuits the photo-cell 6 and a lug stops the running-down of ring 50 at the desired aperture.
Patent GB-1268843-A (GB)
Title: Improvements relating to plasma-torch apparatus
Inventor: DOBBS DAVID JOHN MILLER
IPC: H05H1/34
Filed: 1969-07-04
Abstract: 1,268,843. Treating rails to increase adhesion of wheels. BRITISH RAILWAYS BOARD. 16 June, 1970 [4 July, 1969], No. 33786/69. Heading B7J. [Also in Division H5] A D.C. plasma torch, suitable for cleaning railway lines and improving wheel adhesion, comprises a rod cathode 1, two axially separated, annular anodes 7, 16, and a plasma chamber 10 between the anodes, and includes means for introducing an inert gas such as argon coaxially around the cathode 1, as at 12 and/or 15, and means for introducing the main gas such as air substantially tangentially and downwardly into the chamber 10, as via passages 18. A pilot arc is struck between electrodes 1, 7, and is then transferred from anode 7 to anode 16 to provide the main arc, switch 22 being opened when the main arc is established. The arc rotates round the anode throat 20 as the compressed air is introduced tangentially. The torch components are held together by longitudinal bolts (not shown) or embedded in insulating material. A heat-resisting annulus 17 separates anodes 7, 16, and provides the gas passages 18.
Patent GB-379932-A (GB)
Title: Improvements in or relating to regulators for the control of auxiliary valves
IPC: G05D23/185
Filed: 1931-12-07
Abstract: 379,932. Fluid-actuated valves. GES. FUR SELBSTT€TIGE TEMPERATURREGELUNG, 41, Kaiserallee, Wilmersdorf, Berlin. Dec. 7, 1931, No. 33831. Convention date, Dec. 13, 1930. [Class 135.] Valves controlled by pilot or relay valves.- An auxiliary control valve is actuated by two or more Bourdon tubes connected in parallel. The tubes 7, 7a are anchored at one end to a fitting 6 connected to the control conduit 5 and at their free ends are coupled by a bridge 9. A disc 14 rigidly connected to the spindle 15 of the valve 2 carries a screwed part 13 adjustably screwed into a sleeve 12 itself adjustably clamped by a screw 11 in a member 10 pivoted to the bridge 9. An adjustable loading spring 19 acts on a lever 17 pivoted at 18 and bearing on a flange 16 on the auxiliary valve spindle.
Patent GB-822866-A (GB)
Title: Process for regenerating catalysts used in the synthesis of acrylonitrile
IPC: B01J27/06
Filed: 1957-10-30
Abstract: A process for regenerating cuprous chloride catalysts inactivated by use in the synthesis of acrylonitrile from acetylene and hydrocyanic acid, comprises dehydrating an aqueous solution containing the inactivated catalyst at elevated temperature and removing resins which separate out on the melt formed.  The resins form an oil on the melt which may be decanted from the melt, or the resins may be burnt away with an oxidizing flame.  Alternatively the catalyst solution may be flowed through a rotary furnace in which a highly oxidizing flame is burning, so that the catalyst is dehydrated and a film of melt formed on the walls of the furnace, the resins separating out on the film and then being burnt away.  After regeneration the cuprous chloride, which may contain alkali metal salts, is dissolved in water, acidified, and re-used.  Examples are given.
Patent GB-1262019-A (GB)
Title: Ion-sensitive electrode
IPC: G01N27/333
Filed: 1970-07-13
Abstract: 1,262,019. Electro-chemical analysis. RADIOMETER A.S. July 13, 1970 [July 14, 1969; Dec.30, 1969], No.33899/70. Heading G1N. An ion sensitive electrode comprises a "hydrophobized" conductor which is electrochemically inert (under working conditions) and acts directly as a carrier for the electrochemically active substance. The Specification discusses the art at some length and lists are given of some suitable solid, and liquid active agents, solvents, and waterproofing agents. The INERT CONDUCTOR is preferably porous carbon, or graphite or carbon powder on a metal grid, but porous brass, nickel and stainless steel are mentioned in Examples V and VI. The ACTIVE SUBSTANCE may be in a LIQUID state e.g. as an organic ion-exchanger liquid or dissolved in an inert solvent substantially immiscible in water. The liquid is preferably in reservoir to maintain the porous conductor saturated. The examples listed include metal chelates, ion exchangers, and ion associates. When the active component is not liquid at normal temperatures, a SOLVENT such as aliphatic, aromatic or substituted hydrocarbons or silicone oils may be used, alternatively more viscous liquids may be produced by an inert thickening agent e.g. collodion. Alternatively a SOLID ACTIVE SUBSTANCE may be coated on the conductor e.g. sparingly soluble salts such as silver halide and sulphides, using conventional coating techniques:- e.g. dipping in melted salt; precipitation; spraying; compressing treated carbon powder. The coated electrode is then WATERPROOFED e.g. by xylene, paraffin oils or silicone oils. An ELECTRODE CONSTRUCTION with several minor modifications is described with reference to Figs. 1.. 13 (not shown) with a porous carbon block (20), and a reservoir (22) for the active/waterproofing agent. - In Fig. 11 the electrode is formed by a paste of treated carbon powder in a recess in an insulating rod. - In Figs. 12, 13 the sample solution flows through a bore in the carbon block.
Patent GB-959970-A (GB)
Title: Improvements in or relating to tenter clips
IPC: D06C3/04
Filed: 1962-09-05
Abstract: 959,970. Tentering clips. MARSHALL & WILLIAMS CORPORATION. Sept. 5,1962 [May 28, 1962], No. 33973/62. Heading D1S. A tenter clip comprises a base 11 having a clamping surface 18, a bracket 12 having arms 13, 14 to overlie the surface 18.and a clip jaw 15 hinged to a pintel 16 so as to be normally free to move under gravity to clamp the fabric to be tentered against the surface 18; the jaw 15 comprising a face 25 having an arcuate or polygonal contour whereby in fabric-release position a maximum space exists between the face 25 and the surface 18 and in fabric-gripping postion the face 25 engages the surface 18 on the same horizontal line regardless of the thickness of the fabric being clamped. The face 25 is formed in a head 5 which may be integral with an operating arm 20, Figs. 1, 4 and 6, or may have an arm 31A, Fig. 5, pivoted to a bearing 30A in the arm 20 by a shaft 32 so that the face 25A may pivotally adjust itself to engage the surface 18 along the entire length thereof. The face 25, Fig. 6, is shaped to consist of equally spaced gripping zones having radial distances measured from the centre J of the pintel 16 gradually decreasing from A to G. The gripping zones may be connected by a contour of a "French" curve or by a long arc swung to connect all the zone points on the face 25 or short straight lines may connect all of the zone points. To assist the jaw 15 to close to fabric-gripping position a spring 45, Fig. 4, extending between a plug 41 screwed into a boss 40 and a projection 43 on the jaw 15B may be provided.
Patent GB-750195-A (GB)
Title: Improvements in or relating to universal couplings
Inventor: BALLANTYNE ROBERT
IPC: F16D3/26
Filed: 1953-12-07
Abstract: 750,195. Universal joints. DAVY & UNITED ENGINEERING CO., Ltd. Nov. 25, 1954 [Dec. 7, 1953], No. 33976/53. Class 80(2) A universal joint between yoke members 10, 11 comprises a pair of slippers 12 engaging between cylindrical inner faces 11b of the limbs of the yoke 11 and flat side walls 10a of the yoke 10, which latter has a cylindrical axial recess 10b receiving a' cylindrical block 14 through which passes a cross pin 15 trunnioned in the thickened central portions 12c of the slippers 12. Removable wear plates may be fitted between the block 14 and the recess 10b.